In 2008, Dr. Ivar Giaever joined over 70 Nobel Science Laureates in endorsing Barack Obama for president, but seven years later the Nobel Prize winner now stands against the president on global warming.

“I would say that basically global warming is a non-problem,” Giaever, who won the Nobel for physics in 1973, told an audience at the Lindau Nobel Laureate meeting earlier this month.

Giaever ridiculed Obama for stating that “no challenge poses a greater threat to future generations than climate change.” The physicist called it a “ridiculous statement” and that Obama “gets bad advice” when it comes to global warming.